Edible oil detection system and method
By designing an edible oil detection system that utilizes an angled scraper and density separation solution to detect mineral oil, combined with an automatic labeling function, the system solves the problems of time-consuming detection of mineral oil residues and mixed contamination in edible oil tankers. It achieves rapid and accurate detection and labeling, ensuring food safety.
Patent Information
- Application Number
- CN202511079625.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-04
- Publication Date
- 2025-11-07
AI Technical Summary
Existing technologies cannot effectively detect mineral oil residues in edible oil tankers, leading to mixed contamination. Furthermore, traditional detection methods are time-consuming and cannot meet real-time decision-making needs, while the lack of labeling capabilities makes risk management difficult.
An edible oil detection system was designed, including an angled scraper, a double-conical cylinder, and a marking structure. The system detects mineral oil by scraping an oil film and using a density separation solution, and combines an automatic marking function to ensure the safety of edible oil.
It enables rapid and accurate detection and labeling of mineral oils, avoids mixing of edible oils, ensures food safety, and meets the detection needs of real-time transportation scenarios.
Smart Images
Figure CN120907893A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of edible oil testing technology, and particularly relates to an edible oil testing system and method. Background Technology
[0002] Edible oil safety is a core aspect of protecting public health, especially during transportation, where contamination from mixed loading in tanker trucks has become a significant risk. Reports indicate that some transport vehicles, after carrying non-edible chemical oils such as coal-derived oil and mineral oil, fail to thoroughly clean their tanks before loading edible oil, resulting in the residue of toxic hydrocarbons that contaminate the oil. These contaminants are highly carcinogenic, and long-term ingestion will seriously harm human health.
[0003] Traditional testing relies on laboratory physicochemical analysis, which requires specialized equipment and takes several hours to days, making it unable to meet the real-time decision-making needs of transportation and transshipment scenarios. At the same time, the mineral oil residue on the inner wall of the oil tank is distributed in a thin layer, and traditional sampling tools cannot effectively scrape the residual oil film on the curved tank wall, leading to missed detections. In addition, the lack of marking function means that the same oil tank may be repeatedly mixed in subsequent uses, making it impossible to form a closed-loop risk management system. Summary of the Invention
[0004] In view of this, the technical problem to be solved by the present invention is to provide an edible oil detection system and method, which can inspect edible oil transport tanks and mark tanks containing mineral oil residues to avoid mixed loading and ensure food safety.
[0005] An edible oil testing system includes a base plate with a connecting plate fixedly attached to it. Two movable rods are connected to the connecting plate. Two rotating sleeves are detachably connected to a rotating plate via bolts. The two rotating sleeves are rotatably connected to the two movable rods respectively. A gathering guide groove is provided on the rotating plate, and an angled scraper is provided at the uppermost end of the gathering guide groove. A collection box is fixedly attached to the connecting plate, and a double-conical cylinder is connected to the lower side of the collection box. A collection hole is provided on the collection box, and a through hole is provided on the double-conical cylinder. The through hole and the collection hole are concentric. A marking structure is connected to the rotating plate, which can leave a mark inside the oil tank.
[0006] The double-conical cylinder has an upper conical surface on its upper side and a lower conical surface on its lower side. The cone angle of the upper conical surface is greater than that of the lower conical surface.
[0007] Two fixed sleeves are fixedly connected to the connecting plate. Each fixed sleeve is slidably connected to a moving rod. A tension spring A is fixedly connected between each fixed sleeve and the moving rod.
[0008] It also includes an outer frame fixed to the upper conical surface, a magnetic frame fixed to the outer frame, and an iron ring fixed to the lower side of the collection box, the magnetic frame being able to adhere to the iron ring.
[0009] The collecting box is provided with side baffles on both front and back sides, a sliding rod is fixed on the collecting box, a vertical plate is slidably connected to the sliding rod, and a compression spring is fixed between the vertical plate and the sliding rod.
[0010] The edible oil detection system is used for detecting the edible oil detection method, which comprises the following steps:
[0011] Step one: place the bottom plate in the oil tank truck, and fix the bottom plate through magnetic blocks or sliding suction cups;
[0012] Step two: drive the rotating plate to rotate, and scrape the residual oil film on the tank wall with the inclined angle scraper, and the oil is collected into the collecting box through the converging guide groove;
[0013] Step three: after the scraped oil sample enters the double-cone cylindrical tube from the collecting box, observe the red band;
[0014] Step four: if it contains mineral oil, the mineral oil floats to the n-heptane layer, and the red band is significantly widened, at this time, move the T-shaped block downward, so that the mark cotton contacts the tank wall, and leaves the non-erasable pigment mark;
[0015] Step five: if there is no mineral oil, the red band has no obvious change, then remove the device, and then perform edible oil filling operation. BRIEF DESCRIPTION OF DRAWINGS
[0016] The application will be further described in detail below in combination with the drawings and specific implementation methods.
[0017] Figure 1 and Figure 2 It is a whole structure schematic view of the edible oil detection system;
[0018] Figure 3 It is a structure schematic view of the connecting plate;
[0019] Figure 4 It is a structure schematic view of the bottom plate;
[0020] Figure 5 It is a structure schematic view of the outer frame;
[0021] Figure 6 It is a structure schematic view of the double-cone cylindrical tube;
[0022] Figure 7 It is a structure schematic view of the vertical plate;
[0023] Figure 8 It is a structure schematic view of the rotating plate;
[0024] Figure 9 It is a structure schematic view of the wave plate;
[0025] Figure 10 It is a structure schematic view of the containing box;
[0026] Figure 11 A structural schematic diagram of a T-shaped block. DETAILED DESCRIPTION
[0027] An edible oil detection system, comprising a bottom plate 101, a connecting plate 102 is fixedly connected on the bottom plate 101, two moving rods 103 are connected on the connecting plate 102, two rotating sleeves are detachably connected on a rotating plate 401 through bolts, a rotating shaft is arranged on each moving rod 103, a groove is arranged on each rotating shaft, a convex block is arranged in each rotating sleeve, the two rotating shafts are respectively inserted into the two rotating sleeves, and the two convex blocks are respectively inserted into the two grooves, so that the rotating plate 401 is rotationally connected with the two moving rods 103, a converging guide groove 402 is formed on the rotating plate 401, an inclined angle scraper 403 is arranged at the uppermost end of the converging guide groove 402, a collecting box 201 is fixedly connected on the connecting plate 102, a double-cone cylindrical barrel 302 is connected on the lower side of the collecting box 201, a collecting hole 203 is formed on the collecting box 201, a through hole is formed on the double-cone cylindrical barrel 302, the through hole is concentric with the collecting hole 203, a motor that can drive the rotating shaft on the moving rod 103 to rotate is fixedly connected on the moving rod 103 located at the rear side of the two moving rods 103, a marking structure is connected on the rotating plate 401, and the marking structure can leave a mark inside the oil tank.
[0028] The bottom plate 101 is placed inside the tank truck, and a magnetic block is arranged on the lower side of the bottom plate 101 or a slidable suction cup is arranged on the bottom plate 101, so that the bottom plate 101 can be fixed inside the tank truck, at this time the rotating plate 401 is at a position capable of contacting the side wall of the tank, then the output shaft of the motor is operated to rotate the rotating plate 401 on the two moving rods 103, in this process, the residual oil film on the inner wall of the tank body is scraped off by the inclined angle scraper 403, so that the oil can enter the converging guide groove 402, then the oil is guided by the converging guide groove 402 and then poured into the collection box 201, the collection box 201 is provided with a inclined slope surface from the periphery to the collection hole 203 position, which can make the oil enter the collection hole 203 after entering the collection box 201, then the oil will fall into the upper conical surface 301 through the collection hole 203 and the through hole, the upper conical surface 301 is provided with an added sodium bromide aqueous solution which is blue after adding indigo dye, which is used to lift edible oil to form a clear interface, a transparent glycerol-water mixture, which is used to isolate the upper and lower layers and n-heptane which is red after adding Sudan red, which is used to capture hydrocarbon light mineral oil by using non-polar aliphatic hydrocarbon to dissolve non-polar substances, and the above three solutions will be separated into lower sodium bromide aqueous solution, middle glycerol-water mixture and upper n-heptane three layers due to density reasons, when the scraped oil enters the double-cone-cylinder 302, if the tank truck has transported mineral oil inside and caused mineral oil to exist on the inner wall of the tank, then when the oil enters the double-cone-cylinder 302, the mineral oil will float to the n-heptane layer due to its own light density, which will cause the red band to widen obviously, at this time it proves that the tank truck has been filled with non-edible oil, and then the subsequent edible oil filling operation of the tank truck is stopped in time to ensure food safety, and at the same time the tank truck inner wall can be marked by using the marking structure, so that the next time the tank truck is opened, the marking sign can be quickly observed, so that it can be accurately understood that the tank truck is not an edible oil special tank truck, so as to refuse to add edible oil to the tank, which brings convenience for subsequent inspection and transportation operations.
[0029] On the contrary, if the red band does not widen obviously, the subsequent edible oil filling operation can be carried out, so that the subsequent transportation can be smoothly carried out.
[0030] Further, after the oil is guided into the double-cone-cylinder 302, the double-cone-cylinder 302 can be taken out as a whole, then a constant-temperature circulating water jacket is attached to the outer wall of the double-cone-cylinder 302, so that the temperature of the double-cone-cylinder 302 is always maintained at 25℃±2℃, so as to ensure the stable operation of the subsequent density layering operation.
[0031] The converging guide groove 402 can converge and guide a large range of oil, so that the double-cone-cylinder 302 can contain enough oil sample, and the converging guide groove 402 is designed to collect the scraped oil into the collection box 201, reducing sample loss, especially suitable for curved tank body.
[0032] The double-cone cylinder 302 is provided with an upper conical surface 301 on the upper side, and a lower conical surface 303 on the lower side, the conical angle of the upper conical surface 301 is larger than that of the lower conical surface 303, and the double-cone cylinder 302 is provided with a transparent glass plate.
[0033] The upper conical surface 301 with a larger conical angle can accelerate the floating of mineral oil and shorten the time required for inspection, and the double-cone cylinder 302 with a smaller conical angle can delay the sinking of edible oil, avoid the edible oil from dispersing the bottom layer of sodium bromide through glycerol, and thus provide stable protection for subsequent inspection operations.
[0034] The staff can observe the internal situation of the upper conical surface 301 through the transparent glass plate, and thus accurately obtain the subsequent inspection results.
[0035] The connecting plate 102 is fixedly connected with two fixed sleeves 105, each fixed sleeve 105 is slidably connected with a moving rod 103, and each fixed sleeve 105 and the moving rod 103 are fixedly connected with a tension spring A 104.
[0036] The elastic force exerted by the two tension springs A 104 can make the uppermost end of the rotating plate 401 always abut against the inner wall position of the oil tank, and as the rotating plate 401 rotates on the moving rod 103, the two moving rods 103 can adaptively slide on the two fixed sleeves 105, so that the two moving rods 103 can adapt to the deformation of the tank body or the weld protrusion, and ensure the smooth acquisition of the oil sample detection sample;
[0037] The pre-tightening elastic force of the tension spring A 104 continuously acts on the moving rod 103, and pushes the upper end of the rotating plate 401 to tightly abut against the inner wall of the oil tank, so that even if the tank body is locally uneven due to welding, corrosion or pressure, such as weld protrusion or depression, the rotating plate can still maintain stable contact, while the traditional rigid structure is easy to cause the scraper to be suspended or stuck due to uneven tank wall, and the elastic design of the tension spring A 104 can automatically adjust the pressure to avoid interruption of detection, and the above structure can further adapt to the circumferential ovality deformation of the tank body and cope with the longitudinal weld or depressed area, so as to avoid the rotating plate 401 from being separated from the tank wall due to height difference.
[0038] Further comprising an outer frame 801 fixedly connected to the upper conical surface 301, the outer frame 801 is fixedly connected with a magnetic frame 802, and the collecting box 201 is fixedly connected with an iron ring 205, and the magnetic frame 802 can be adsorbed on the iron ring 205.
[0039] In the process of collecting oil sample, the magnetic frame 802 is adsorbed on the iron ring 205 until the collected oil sample passes through the double-cone cylinder 302 and enters the double-cone cylinder 302, then the staff can pull the magnetic frame 802 off the iron ring 205 by applying external force, and then attach the constant-temperature circulating water jacket for subsequent inspection.
[0040] The collecting box 201 is provided with side baffles 202 on the front and rear sides, and the front side baffle 202 is not shown in other structure diagrams for easy observation. The collecting box 201 is fixedly connected with a sliding rod 204, and a vertical plate 206 is slidingly connected with the sliding rod 204. A compression spring is fixedly connected between the vertical plate 206 and the sliding rod 204.
[0041] The two side baffles 202 can shield the front and rear sides of the collecting box 201, thereby preventing the oil sample from leaking out of the front and rear sides of the collecting box 201 and ensuring the collection and guidance effect of the oil sample. Meanwhile, the vertical plate 206 can shield the left side of the collecting box 201. During the rotation of the rotating plate 401, the vertical plate 206 can be adapted to slide on the sliding rod 204 under the elastic force of the compression spring, so that the upper end of the vertical plate 206 abuts against the upper side of the rotating plate 401, further ensuring that the scraped oil sample will not splash, and enabling the oil sample to smoothly enter the collecting box 201 for storage and guidance.
[0042] The wave plate 501 is detachably connected to the rotating plate 401 by bolts. The wave plate 501 is provided with a plurality of connecting grooves 502, and the wave plate 501 is fixedly connected with a magnetic block 503.
[0043] During actual use, the rear rotating sleeve can also be detached by loosening the bolts, then the rotating sleeve is pulled out from the rotating shaft position on the rear moving rod 103, and the wave plate 501 is fixed on the rotating plate 401 by tightening the bolts, and a mineral oil detection card, such as a card with a silver nitrate color developing layer, is connected in the connecting grooves 502, and the magnetic block 503 is adsorbed on the barrel wall. When the rotating plate 401 is rotated to scrape the oil sample, one end of the wave plate 501 will move synchronously with the rotating plate 401, so that the wave plate 501 can gradually expand, and the color developing card on the wave plate 501 can be in contact with the barrel wall. If the barrel wall contains hydrocarbon mineral oil, the card with the silver nitrate color developing layer will turn black, and whether there is a widened red band in the double-cone cylinder 302 can further ensure the accuracy of the test result.
[0044] The wave plate 501 surface makes the connecting groove undulate, and the detection card forms a multi-point contact array after being embedded. When the wave plate 501 is unfolded by rotating the rotating plate 401, the detection card preferentially contacts the tank wall at the trough, and the peak leaves a deformation buffer space to adapt to the weld protrusion or depression. When the oil film on the tank wall is too thin to be scraped into the collection box, the wave plate 501 can still independently complete the pollution screening.
[0045] Further comprising a T-shaped block 702 slidingly connected to the rotating plate 401, the T-shaped block 702 is fixedly connected with a mark block 701 at the lower side, a tension spring B 703 is fixedly connected between the T-shaped block 702 and the rotating plate 401, and the mark block 701 is attached with a mark cotton at the lower side through a magic tape.
[0046] Under normal circumstances, the tension spring B 703 will make the mark block 701 lift up to avoid accidental touch. When it is detected that the tank body contains mineral oil, the T-shaped block 702 can be slid downward to make the mark block 701 at the lower side of the T-shaped block 702 contact the inner wall of the tank body, so that the mark cotton at the lower side of the mark block 701 is pressed against the pipe body to leave an indelible pigment mark, thereby marking the tank body. When the mark is found again, the edible oil adding operation does not need to be retested and directly rejected;
[0047] The pre-tightening force of the tension spring B 703 controls the normal state, and the elastic force of the tension spring B pulls the T-shaped block 702 and the mark block 701 upward to keep a safe gap between the mark cotton and the tank wall, avoiding accidental contact due to vibration or uneven tank body when the rotating plate 401 rotates, and preventing false marking in a non-pollution state;
[0048] After detecting mineral oil pollution, the T-shaped block 702 is pressed downward by hand to overcome the elastic force of the tension spring B to make the mark cotton contact the tank wall. The mark cotton connected by the magic tape of the mark block 701 can be replaced, and the pressure is controlled by the operator to ensure that the pigment uniformly penetrates the corrosion-resistant coating of the tank wall to form an indelible mark.
[0049] Further comprising a cylindrical rod 704 fixedly connected to the T-shaped block 702, a fixed block 601 is fixedly connected to the front side of the two moving rods 103, an arc strip 602 is fixedly connected to the fixed block 601, and a pressing strip 603 is fixedly connected to the arc strip 602.
[0050] When the rotating plate 401 rotates a small angle during inspection, enough oil sample can be obtained. During this process, the cylindrical rod 704 will gradually move on the arc strip 602. When the inspection result is that there is mineral oil in the tank body, the rotating plate 401 can be continuously rotated upward. At this time, the arc strip 602 will gradually move to the contact position with the pressing strip 603. Then, with the gradual rotation of the rotating plate 401, the pressing strip 603 will gradually press the cylindrical rod 704, so that the T-shaped block 702 moves downward against the elastic force of the tension spring B 703, and then the mark block 701 is pressed against the barrel wall to complete the mark printing effect on the barrel wall.
[0051] When the pollution is detected, the rotating plate 401 continues to rotate upward, and the cambered strip moves to the contact position of the pressing strip along the predetermined track. The pressing strip 603 presses the cylindrical rod 704, and pushes the T-shaped block 702 to move downward against the resistance of the tension spring B, so as to realize full-automatic pressing. That is, the device considers both automatic and manual imprint pressing modes, and the imprint triggering angle and the oil scraping path are staggered to avoid interference with the sampling process.
[0052] The device further comprises a containing box 404 fixed to the rotating plate 401.
[0053] In normal state, the containing box 404 is detachably connected with a cover plate through bolts. When it is necessary to supplement the pigment on the imprint cotton, the cover plate is removed by unscrewing the bolts, and then the imprint cotton is removed to supplement the pigment on the imprint cotton, thereby bringing convenience to subsequent imprinting operation.
[0054] The edible oil detection system is used for detecting the edible oil detection method, and the method comprises the following steps:
[0055] Step one: place the bottom plate 101 in the oil tank truck, and fix the bottom plate through magnetic blocks or sliding suction cups;
[0056] Step two: drive the rotating plate 401 to rotate, and the bevel angle scraper 403 scrapes the residual oil film on the tank wall, and the oil liquid is collected into the collection box 201 through the converging guide groove 402;
[0057] Step three: after the scraped oil sample enters the double-cone cylindrical 302 from the collection box 201, the red band is observed;
[0058] Step four: if mineral oil is contained, the mineral oil floats to the n-heptane layer, and the red band is significantly widened. At this time, the T-shaped block 702 is moved downward, so that the imprint cotton contacts the tank wall, and leaves the non-erasable pigment imprint;
[0059] Step five: if there is no mineral oil, the red band has no obvious change, and then the device is removed, and then the edible oil filling operation is performed.
Claims
1. An edible oil detection system, characterized by, The utility model provides a kind of oil tank wall oil film scraping device, including bottom plate, fixedly connected with connecting plate on bottom plate, two moving rods are connected on connecting plate, two rotating sleeves are detachably connected on rotating plate by bolt, two rotating sleeves are rotatably connected on two moving rods respectively, converging guide slot is opened in rotating plate, the upper end of converging guide slot is equipped with bevel scraper, fixedly connected with collection box on connecting plate, double-cone cylindrical is connected on the lower side of collection box, collection hole is opened in collection box, through-hole is opened in double-cone cylindrical, and through-hole is concentric with collection hole, connecting with mark structure on rotating plate, mark structure can leave mark in oil tank.
2. The system for detecting edible oil according to claim 1, wherein The upper side of the double-cone cylindrical is provided with an upper taper, and the lower side of the double-cone cylindrical is provided with a lower taper.
3. The system for detecting edible oil according to claim 2, wherein Two fixed sleeves are fixedly connected to the connecting plate, and each fixed sleeve is slidably connected with a moving rod.
4. The system for detecting edible oil according to claim 3, wherein A fixed sleeve is fixedly connected to the connecting plate, and the moving rod is slidably connected with the fixed sleeve.
5. The system for detecting edible oil according to claim 4, wherein The upper side of the double-cone cylindrical is provided with an upper taper, and the lower side of the double-cone cylindrical is provided with a lower taper.
6. The system for detecting edible oil according to claim 5, wherein The front and rear sides of the collection box are each provided with a side baffle, and a sliding rod is fixedly connected to the collection box.
7. The system for detecting edible oil according to claim 6, wherein A T-shaped block is slidably connected to the rotating plate, and a mark block is fixedly connected to the lower side of the T-shaped block.
8. The system for detecting edible oil according to claim 7, wherein A cylindrical rod is fixedly connected to the T-shaped block, a fixed block is fixedly connected to the front moving rod of the two moving rods, an arc strip is fixedly connected to the fixed block, and a pressing strip is fixedly connected to the arc strip.
9. The system for detecting edible oil according to claim 8, wherein A containing box is fixedly connected to the rotating plate.
10. The method for detecting edible oil according to claim 8, wherein The method comprises the following steps: Step one: place the bottom plate inside the oil tank truck, and fix the bottom plate by magnetic block or sliding suction cup; Step two: drive the rotating plate to rotate, and the bevel scraper scrapes the residual oil film on the tank wall, and the oil is collected into the collection box through the converging guide slot; Step three: after the scraped oil sample enters the double-cone cylindrical from the collection box, observe the red band; Step four: if there is mineral oil, the mineral oil floats to the n-heptane layer, and the red band widens significantly, at this time, move the T-shaped block downward, so that the mark cotton contacts the tank wall and leaves an indelible pigment mark; Step five: if there is no mineral oil, the red band does not change significantly, then remove the device, and then perform edible oil filling operation.